| //===----------------------------------------------------------------------===// | |
| // | |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | |
| // See https://llvm.org/LICENSE.txt for license information. | |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |
| // | |
| //===----------------------------------------------------------------------===// | |
| #ifndef _LIBCPP___CONCEPTS_SAME_AS_H | |
| #define _LIBCPP___CONCEPTS_SAME_AS_H | |
| #include <__config> | |
| #include <__type_traits/is_same.h> | |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) | |
| # pragma GCC system_header | |
| #endif | |
| #if _LIBCPP_STD_VER >= 20 | |
| _LIBCPP_BEGIN_NAMESPACE_STD | |
| // [concept.same] | |
| template <class _Tp, class _Up> | |
| concept __same_as_impl = _IsSame<_Tp, _Up>::value; | |
| template <class _Tp, class _Up> | |
| concept same_as = __same_as_impl<_Tp, _Up> && __same_as_impl<_Up, _Tp>; | |
| _LIBCPP_END_NAMESPACE_STD | |
| #endif // _LIBCPP_STD_VER >= 20 | |
| #endif // _LIBCPP___CONCEPTS_SAME_AS_H |